Answer:
a) 9.46M m/s^2
b) 48.83m
c) 68.22m/s
Explanation:
The centripetal force must be equal to the horizontal component (x component) of the gravitational force over the plum bob. Thus, we have
( 1 )
where M is the mass of the car, v its speed, r the radius of the curvature and g the gravity constant.
a) By replacing we obtain:
( 2 )
where it is only necessary to put the mass of the car M in (2).
b) By canceling M in (2) and taking apart r we get:
c) If the angle is 7° the speed is given by:
hope this helps!!
Answer:
53.06°
Explanation:
refractive index of air = 1
refractive index of water, n = 1.33
Let the angle of polarisation is ip.
Use Brewster's law,
n = tan ip
1.33 = tan ip
ip = 53.06°
thus, the angle of polarisation is 53.06°.
C. You’re welcome
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The force on the fry is 
Explanation:
We can find the force acting on the fry by using Newton's second law:
where
F is the net force on the fry
m is its mass
a is its acceleration
For the fry in this problem,
Therefore, the force exerted on the fry is
Learn more about Newton's second law here:
brainly.com/question/3820012
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